package org.csmz;

public class Example03 {
    public static void main(String[] arg) {
        int i = 20;
        long l = i;
        float f = l;
        double d = f;
        System.out.println("long类型变量l:" + l);
        System.out.println("float类型变量f:" + f);
        System.out.println("double类型变量d:" + d);
    }
}